GRP pipeline pressure test structure

Abstract

The utility model relates to the technical field of GRP pipeline pressure testing, in particular to a GRP pipeline pressure testing structure, which is characterized in that two ends of a pipeline to be subjected to pressure testing are detachably connected with blind plates, the blind plates are provided with annular positioning grooves, sealing rubber rings are arranged in the positioning grooves, the end parts of the pipeline to be subjected to pressure testing are positioned in the positioning grooves, and the sealing rubber rings are arranged in the positioning grooves. The sealing rubber ring is abutted against the end part of the pipeline to be subjected to pressure test; an anchor block is arranged on the side, away from the pipeline to be subjected to pressure test, of the blind plate, the blind plate abuts against the anchor block through an adjustable support, and the adjustable support is used for adjusting the distance between the blind plate and the anchor block. According to the GRP pipeline pressure test structure provided by the utility model, the problems of poor sealing performance and easy leakage in the existing pressure test structure are well solved, accidental leakage caused by untight sealing in the existing structure is effectively avoided, and the safety and reliability in the pressure test process are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to GRP pipeline pressure test technical field, especially in a kind of GRP pipeline pressure test structure. BACKGROUND

[0002] GRP pipeline (glass steel pipe is also called polyester glass steel pipe) has excellent corrosion resistance, light weight, long service life and other advantages, and is widely used in petroleum, chemical industry, water treatment and other fields.In the installation and use process of GRP pipeline, in order to ensure the performance of pipeline, water pressure or gas pressure test is needed for pipe system.Through pressure test, it can be found that whether there is leakage problem in the connecting part of pipeline or pipe wall, to ensure the safety of pipeline in actual operation.

[0003] However, the existing GRP pipeline pressure test structure is usually welded blind plate at both ends of the pipeline to be tested for pressure test, but due to the fact that the pipeline interface is not completely flat, the sealing is not strict during the pressure test, which leads to the failure of pipeline pressure test, and even accidental leakage occurs.In addition, under high pressure condition, the pipeline interface may bear a large impact force, which further increases the risk of sealing failure. SUMMARY

[0004] The utility model aims at overcoming the deficiency that the existing GRP pipeline pressure test structure has poor sealing, and accidental leakage easily occurs during pressure test, and provides a GRP pipeline pressure test structure.

[0005] In the first aspect, the utility model provides a kind of GRP pipeline pressure test structure, the pipeline to be tested for pressure test is detachably connected blind plate at both ends, the blind plate is provided with annular positioning groove, sealing rubber ring is arranged in the positioning groove, the end of the pipeline to be tested for pressure test is located in the positioning groove, and the sealing rubber ring is in abutment with the end of the pipeline to be tested for pressure test;The blind plate is provided with pier on the side away from the pipeline to be tested for pressure test, and the blind plate is in abutment with the pier by adjustable support, and the adjustable support is used to adjust the distance between the blind plate and the pier.

[0006] The GRP pipeline pressure test structure provided by the utility model sets sealing rubber ring in the annular positioning groove of blind plate, the end of the pipeline to be tested for pressure test is located in the positioning groove, and the sealing rubber ring is in abutment with the end of the pipeline, so that the tolerance of pipeline interface can be well absorbed, and more reliable sealing effect is realized;

[0007] The blind plate is in abutment with the pier by adjustable support, and the distance between the blind plate and the pier can be adjusted according to actual needs, so as to ensure the stability of pipeline and blind plate during pressure test, and reduce the risk of sealing failure caused by impact force under high pressure condition;

[0008] The GRP pipeline pressure test structure provided by the utility model solves the problems of poor sealing and easy leakage in the prior art, effectively avoids accidental leakage caused by poor sealing in the prior art, and improves the safety and reliability of the pressure test process.

[0009] Preferably, the thickness of the sealing rubber ring is 8-12 mm.

[0010] Preferably, the thickness of the sealing rubber ring is 8-12 mm, and the moderate thickness range can effectively adapt to the tolerance change of the pipeline end, so that the sealing rubber ring provides sufficient compression deformation space when contacting the pipeline end, thereby realizing a more compact sealing effect and reducing the risk of leakage; in addition, the sealing rubber ring with a moderate thickness range has strong compression resistance under high pressure, can withstand the high pressure impact in the pipeline pressure test process, and avoids sealing failure caused by excessive pressure.

[0011] Preferably, the adjustable support comprises a threaded rod, the threaded rod is threadedly connected with a threaded disc, one end of the threaded rod is fixedly connected with a tray, the tray abuts against the blind plate, and the other end of the threaded rod away from the tray is connected with the pier.

[0012] With this structure, the distance between the blind plate and the pier can be accurately adjusted through the threaded connection of the threaded rod and the threaded disc. In use, the end of the threaded rod away from the tray is fixed to the pier, and the tray is abutted against the blind plate by rotating the threaded disc. This structure makes the adjustment operation more flexible and accurate, adapts to the pressure test requirements of pipelines of different lengths, and ensures the stability during the pressure test; the abutment of the tray and the blind plate can effectively disperse the pressure applied on the blind plate, avoid uneven local stress, and improve the stability of the overall structure, especially under high pressure, to reduce the risk of failure caused by impact force.

[0013] Preferably, the thickness of the blind plate is 25-30 mm.

[0014] Preferably, the thickness of the blind plate is 25-30 mm, which can withstand the high pressure impact generated in the pipeline pressure test process, reduce the risk of failure caused by deformation or rupture of the thin plate, and ensure the safety and reliability of the pressure test process.

[0015] Preferably, the side of the blind plate away from the pipeline to be tested is provided with a plurality of rib plates.

[0016] The rib plates greatly improve the overall rigidity of the blind plate, can effectively prevent the blind plate from deforming or bending due to uneven stress during the pressure test process, and ensure that it remains stable in shape under high pressure.

[0017] Preferably, the rib plates are longitudinally and transversely staggered to form a cross-shaped structure, and the distance between two adjacent parallel rib plates is 285-325 mm.

[0018] The cross-shaped structure can effectively and uniformly distribute stress, the longitudinal and transverse interlaced design of the rib plate greatly improves the overall rigidity of the blind plate, ensures that deformation is not easy to occur under high pressure, and further enhances the pressure resistance of the blind plate; the rib plate spacing is reasonably set to 285mm-325mm, ensuring that the stress is uniformly dispersed, so that the blind plate can better withstand the high pressure impact from the pipeline during pressure test, avoiding structural damage caused by local stress concentration.

[0019] Preferably, the rib plate is an I-shaped steel structural member.

[0020] Preferably, the rib plate is an I-shaped steel, which has good bending and compression resistance and can greatly enhance the carrying capacity of the rib plate, effectively support the stress requirement of the blind plate during high pressure test, and reduce the risk of deformation and damage, while the I-shaped steel structure is simple and low in cost, which can well help reduce construction cost.

[0021] Preferably, the tray is a U-shaped structure, the tray is in abutment with the rib plate, and the rib plate can be clamped into the tray.

[0022] With this structure design, the U-shaped tray structure can closely fit the rib plate, and after the rib plate is clamped into the tray, a firm connection is formed, avoiding loosening or displacement between the tray and the rib plate, further improving the stability of the entire structure and ensuring the stability of each component during pressure test.

[0023] Preferably, the adjustable support is located at the intersection of the rib plate; the number of adjustable supports connected with the same blind plate is ≥20.

[0024] The adjustable support is located at the intersection of the rib plate, which can better uniformly transmit pressure to the key nodes of the rib plate, ensure that the stress of the blind plate is more uniform when under pressure, and reduce the risk of deformation or damage caused by local stress concentration; the arrangement of multiple adjustable supports increases the support strength of the blind plate, especially under high pressure or instantaneous impact force, this layout can better absorb and relieve impact force, reduce the damage and failure probability of the structure.

[0025] Preferably, the abutment is provided with undisturbed soil on the side away from the pipeline to be tested, and the height of the undisturbed soil is at least 1.5m higher than the height of the abutment.

[0026] The height of the undisturbed soil is at least 1.5m higher than the height of the abutment, which provides additional anti-sliding and anti-overturning capacity by increasing the back support of the abutment. This design makes the abutment more stable during high pressure test, preventing displacement or tilting caused by high pressure or external impact force.

[0027] Compared with the prior art, the utility model has the advantages of:

[0028] 1.The GRP pipeline pressure test structure provided by the utility model, through setting sealing rubber ring in the annular positioning groove of the blind plate, the end part of the pipeline to be tested is located in the positioning groove, the sealing rubber ring abuts against the end part of the pipeline, the sealing rubber ring can well absorb the tolerance of the pipeline interface, and more reliable sealing effect is realized.

[0029] 2.The GRP pipeline pressure test structure provided by the utility model, the blind plate abuts against the pier through the adjustable support, the distance between the blind plate and the pier can be adjusted according to actual needs, the stability of the pipeline and the blind plate in the pressure test process is ensured, and the risk of sealing failure caused by impact force under high pressure conditions is reduced.

[0030] 3.The GRP pipeline pressure test structure provided by the utility model well solves the poor sealing and easy leakage problems in the existing pressure test structure, effectively avoids accidental leakage caused by poor sealing in the existing structure, and improves the safety and reliability of the pressure test process. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structural schematic view of the GRP pipeline pressure test structure.

[0032] Figure 2 It is Figure 1 the enlarged view of A part.

[0033] Figure 3 It is Figure 2 the enlarged view of B part.

[0034] Figure 4 It is a blind plate structure schematic view (without installing sealing rubber ring).

[0035] Figure 5 It is a blind plate structure schematic view (with installing sealing rubber ring).

[0036] Figure 6 It is a blind plate one side structure schematic view.

[0037] Figure 7 It is an adjustable support structure schematic view of embodiment 1.

[0038] Figure 8 It is an adjustable support structure schematic view of embodiment 2.

[0039] Markings in the figure:

[0040] 1-blind plate, 11-positioning groove, 12-sealing rubber ring, 13-rib plate, 2-pier, 3-adjustable support, 31-threaded rod, 32-threaded disc, 33-tray, 4-original soil, 5-drain pipe, 6-water inlet pipe, 7-exhaust pipe, 100-pipeline to be tested. DETAILED DESCRIPTION

[0041] The utility model will be described in further detail below in combination with specific embodiments. However, this should not be understood as limiting the scope of the above-mentioned subject matter of the utility model to the following embodiments only, and any technology realized based on the content of the utility model falls within the scope of the utility model.

[0042] In the description of the embodiments of the utility model, the terms indicating the orientation or position relationship of "up", "down", "left", "right", "center", "inner", "outer", etc. are expressed based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product / equipment / device of the utility model is usually used. These terms of orientation or position relationship are only used to facilitate the description of the utility model scheme or simplify the description in the embodiments, so as to enable the skilled person to quickly understand the scheme, and therefore cannot be understood as indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific position relationship, and therefore cannot be understood as limiting the utility model.

[0043] In addition, the terms "horizontal", "vertical", "overhanging", "parallel", etc. do not mean that the corresponding device / component / element must be absolutely horizontal or vertical or overhanging or parallel, but can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Alternatively, it can be simplified to understand that the corresponding device / component / element is arranged in the direction of "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the utility model.

[0044] In addition, the terms "first", "second", "third", etc. in the terms are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of the specific components.

[0045] In addition, in the description of the embodiments of the utility model, "several", "a plurality of", "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. in any case, or even more than 9.

[0046] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0047] Example 1

[0048] This embodiment provides a GRP pipeline pressure testing structure to improve the sealing performance of the GRP pipeline pressure testing structure and prevent accidental leakage during pipeline pressure testing.

[0049] Specifically, such as Figures 1-7 As shown, the GRP pipeline pressure testing structure includes a pipeline 100 to be tested, and blind flanges 1 are detachably connected to both ends of the pipeline 100 to be tested. For example, the blind flanges 1 can be connected to the pipeline 100 to be tested by bolts.

[0050] Preferably, the thickness of the blind flange 1 is 25mm-30mm, and more preferably, the blind flange 1 can be made of A36 steel with a thickness of 30mm. The appropriate thickness of the blind flange 1 enables it to withstand the high-pressure impact generated during pipeline pressure testing, reducing the risk of failure due to deformation or cracking of the thin plate, and ensuring the safety and reliability of the pressure testing process.

[0051] like Figure 4 , Figure 5 As shown, the blind flange 1 has an annular positioning groove 11. The positioning groove 11 is used to facilitate the positioning of the pipeline 100 to be tested. It can be foreseen that the diameter of the positioning groove 11 matches the diameter of the pipeline 100 to be tested.

[0052] A sealing ring 12 is provided in the positioning groove 11. The end of the pipe 100 to be tested is located in the positioning groove 11, and the sealing ring 12 abuts against the end of the pipe 100 to be tested. Preferably, the thickness of the sealing ring 12 is 8mm-12mm, and more preferably, a rubber sheet with a thickness of 10mm is used as the sealing ring 12. The preferred thickness of the sealing ring 12 is 8mm-12mm. This moderate thickness range can effectively adapt to the tolerance changes at the pipe end, ensuring a flexible seal at the joint between the pipe 100 to be tested and the blind flange 1. This provides sufficient compression deformation space for the sealing ring 12 when it contacts the pipe end, thereby achieving a tighter seal and reducing the risk of leakage. In addition, the sealing ring 12 with a moderate thickness range has strong compression resistance under high pressure conditions and can withstand the high pressure impact during the pipe pressure test, avoiding seal failure due to excessive pressure.

[0053] The blind plate 1 is provided with a pier 2 on the side away from the pipeline 100 to be tested, and the blind plate 1 is in abutment with the pier 2 through an adjustable support 3, which is used to adjust the distance between the blind plate 1 and the pier 2.

[0054] Specifically, as shown in the figure, Figure 7 The adjustable support 3 comprises a threaded rod 31, the threaded rod 31 is threadedly connected with a threaded disc 32, and the position of the threaded disc 32 on the threaded rod 31 can be adjusted by rotating the threaded disc 32 clockwise or counterclockwise; one end of the threaded rod 31 is fixedly connected with a tray 33, for example, the tray 33 can be welded with the threaded rod 31, and in the embodiment, the tray 33 can be a flat plate structure. The tray 33 is in abutment with the blind plate 1, and the end of the threaded rod 31 away from the tray 33 is connected with the pier 2.

[0055] With this structure, the distance between the blind plate 1 and the pier 2 can be accurately adjusted through the threaded connection of the threaded rod 31 and the threaded disc 32. In use, the end of the threaded rod 31 away from the tray 33 is fixed to the pier 2, one end face of the threaded disc 32 is in movable contact with one end face of the pier 2, and the tray 33 is abutted against the blind plate 1 by rotating the threaded disc 32. This structure makes the adjustment operation more flexible and accurate, adapts to the pressure testing requirements of pipelines of different lengths, and ensures the stability during the pressure testing process; the tray 33 is in abutment with the blind plate 1, which increases the contact area of the adjustable support 3 and the blind plate 1, can effectively disperse the pressure applied on the blind plate 1, avoid uneven local stress, and improve the stability of the overall structure, especially under high pressure conditions, to reduce the risk of failure caused by impact force.

[0056] Preferably, the side of the blind plate 1 away from the pipeline 100 to be tested is provided with a plurality of rib plates 13. The setting of the rib plates 13 greatly improves the overall rigidity of the blind plate 1, which can effectively prevent the blind plate 1 from deforming or bending due to uneven stress during the pressure testing process, and ensure that it remains stable in shape under high pressure conditions.

[0057] Preferably, as shown in the figure, Figure 6 The rib plates 13 form a cross-shaped structure by being arranged longitudinally and transversely, for example, the transverse rib plates 13 can be parallel to each other, the longitudinal rib plates 13 can be parallel to each other, the transverse rib plates 13 can be perpendicular to the longitudinal rib plates 13, and the distance between two adjacent parallel rib plates 13 is 285mm-325mm. The cross-shaped structure can effectively and uniformly distribute the stress, the longitudinal and transverse arrangement of the rib plates 13 greatly improves the overall rigidity of the blind plate 1, ensures that it is not easy to deform under high pressure conditions, and further enhances the pressure resistance of the blind plate 1; the reasonable distance between the rib plates 13 is set to 285mm-325mm, preferably 300mm, which ensures uniform stress dispersion, so that the blind plate 1 can better withstand the high pressure impact from the pipeline during the pressure testing process, and avoid structural damage caused by local stress concentration.

[0058] Further, asFigure 1 As shown, the GRP pipeline pressure test structure provided in the embodiment further comprises a drain pipe 5, a water inlet pipe 6 and an exhaust pipe 7. Specifically, the water inlet pipe 6 can be arranged at the low end of the pipeline to be tested 100. The water inlet pipe 6 can be made of a DN100mm seamless steel pipe. A water inlet ball valve is arranged on the water inlet pipe 6, and the water inlet pipe 6 is connected with the pressure test pump. The drain pipe 5 can be made of a DN100mm seamless steel pipe and is additionally provided with a 3.0MPa ball valve, which is convenient for controlling the amount of water drained. The exhaust pipe 7 can be arranged at the high end of the pipeline to be tested 100, which is beneficial for the smooth discharge of gas in the lumen during the water injection process. The exhaust pipe 7 can be made of a DN50mm seamless steel pipe and is additionally provided with a 3.0Mpa valve.

[0059] The GRP pipeline pressure test structure provided in the embodiment can well absorb the tolerance of the pipeline interface, and achieve a more reliable sealing effect. The blind plate 1 is in abutment with the pier 2 through the adjustable support 3, and the distance between the blind plate 1 and the pier 2 can be adjusted according to actual needs, which ensures the stability of the pipeline and the blind plate 1 during the pressure test and reduces the risk of sealing failure caused by impact force under high pressure conditions.

[0060] The GRP pipeline pressure test structure provided in the embodiment can well solve the problems of poor sealing and easy leakage in the existing pressure test structure, effectively avoid accidental leakage caused by poor sealing in the existing structure, and improve the safety and reliability of the pressure test process.

[0061] Embodiment 2

[0062] On the basis of embodiment 1, the GRP pipeline pressure test structure provided in the embodiment is that the rib plate 13 is an I-beam structural member. Preferably, the rib plate 13 is an I-beam, for example, a 16# I-beam. The I-beam structural member has good bending resistance and compression resistance, can greatly enhance the carrying capacity of the rib plate 13, effectively support the stress requirement of the blind plate 1 in the high pressure test, and reduce the risk of deformation and damage. At the same time, the I-beam structure is simple and low in cost, which can well help to reduce the construction cost.

[0063] As shown, Figure 8 Unlike the flat plate-shaped tray 33 provided in embodiment 1, the tray 33 in the embodiment is a U-shaped structure, and the tray 33 is in abutment with the rib plate 13. For example, the rib plate 13 is selected to be an I-beam, which can be well clamped into the U-shaped tray 33, i.e. the rib plate 13 can be clamped into the tray 33. With this structural design, the U-shaped tray 33 structure can be closely combined with the rib plate 13, and the rib plate 13 is clamped into the tray 33 to form a firm connection, avoiding the loosening or displacement between the tray 33 and the rib plate 13, further improving the stability of the whole structure and ensuring the stability of each component during the pressure test.

[0064] Preferably, the adjustable support 3 is located at the intersection of the rib plate 13, for example, the U-shaped tray 33 can be located at the intersection of the longitudinal and transverse rib plates 13.

[0065] Preferably, the number of adjustable supports 3 connected to the same blind plate 1 is ≥20, and more preferably, the number of adjustable supports 3 connected to the same blind plate 1 is 21.

[0066] The adjustable support 3 is arranged at the intersection of the rib plate 13, which can better uniformly transmit pressure to the key nodes of the rib plate 13, ensuring that the blind plate 1 is more uniformly stressed when under pressure, reducing the risk of deformation or damage caused by local stress concentration; the arrangement of multiple adjustable supports 3 increases the support strength of the blind plate 1, especially under high pressure or instantaneous impact force, this layout can better absorb and relieve impact force, reducing the probability of structural damage and failure.

[0067] Embodiment 3

[0068] On the basis of Embodiment 1 or Embodiment 2, the GRP pipeline pressure test structure provided in this embodiment is provided with undisturbed soil 4 on the side of the abutment 2 away from the pipeline 100 to be tested, and the height of the undisturbed soil 4 is at least 1.5 m higher than the height of the abutment 2.

[0069] The height of the undisturbed soil 4 is at least 1.5 m higher than the height of the abutment 2, which provides additional anti-sliding and anti-overturning capacity by increasing the back support of the abutment 2. This design makes the abutment 2 more stable during high-pressure testing, preventing displacement or tilting caused by high pressure or external impact force.

[0070] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A GRP pipe pressure test structure, comprising a pipe (100) to be tested, and detachably connected to both ends of the pipe (100) are blind plates (1), characterized in that, the blind plate (1) is provided with an annular positioning groove (11), a sealing rubber ring (12) is arranged in the positioning groove (11), and the end of the pipe (100) to be tested is located in the positioning groove (11) and abuts against the sealing rubber ring (12); the side of the blind plate (1) away from the pipe (100) to be tested is provided with a pier (2), the blind plate (1) abuts against the pier (2) through an adjustable support (3), and the adjustable support (3) is used to adjust the distance between the blind plate (1) and the pier (2).

2. The GRP pipe pressure testing structure according to claim 1, wherein, The thickness of the sealing rubber ring (12) is 8-12 mm.

3. The GRP pipe pressure testing structure of claim 1, wherein, The adjustable support (3) comprises a threaded rod (31), the threaded rod (31) is threadedly connected with a threaded disc (32), one end of the threaded rod (31) is fixedly connected with a tray (33), the tray (33) abuts against the blind plate (1), and the end of the threaded rod (31) away from the tray (33) is connected with the pier (2).

4. The GRP pipe pressure testing structure of claim 1, wherein, The thickness of the blind plate (1) is 25-30 mm.

5. The GRP pipe pressure testing structure according to claim 3, wherein, The side of the blind plate (1) away from the pipe (100) to be tested is provided with a plurality of rib plates (13).

6. The GRP pipe pressure testing structure of claim 5, wherein, The rib plates (13) are arranged in a cross shape, and the distance between two adjacent parallel rib plates (13) is 285-325 mm.

7. The GRP pipe pressure testing structure of claim 5, wherein, The rib plate (13) is an I-shaped steel structural member.

8. The GRP pipe pressure testing structure of claim 6, wherein, The tray (33) is a U-shaped structure, the tray (33) abuts against the rib plate (13), and the rib plate (13) can be clamped into the tray (33).

9. The GRP pipe pressure testing structure of claim 6, wherein, The adjustable support (3) is located at the intersection of the rib plates (13), and the number of the adjustable supports (3) connected with the same blind plate (1) is greater than or equal to 20.

10. The GRP pipe pressure testing structure of claim 1, wherein, The side of the pier (2) away from the pipe (100) to be tested is provided with undisturbed soil (4), and the height of the undisturbed soil (4) is at least 1.5 m higher than the height of the pier (2).

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